MicroBT WhatsMiner M66S++ (348Th)

The MicroBT WhatsMiner M66S++ (348Th) represents the latest evolution in immersion-cooled SHA-256 mining technology, purpose-built for high-performance Bitcoin operations. Delivering a powerful 348 TH/s hashrate with a wall power consumption of approximately 5394W, the M66S++ achieves an impressive 15.5 J/Th energy efficiency, positioning it among the most competitive immersion miners in its class.

Engineered for large-scale industrial deployments, this model leverages advanced immersion cooling technology to maintain optimal chip temperatures under continuous heavy workloads. By submerging the hardware in dielectric fluid, heat is dissipated more efficiently than traditional air systems, reducing thermal stress and enhancing long-term reliability. The result is stable, high-output performance even in demanding, high-density mining facilities.

Designed with practicality in mind, the compact chassis (267.5 × 147 × 401 mm) and integrated handle allow for easier handling and rack integration. Weighing approximately 18 kg, the unit balances robust construction with deployment flexibility. It operates on AC 380–480V power infrastructure, making it ideal for professional data centers and industrial mining farms.

With a working temperature range of -5°C to 35°C and Ethernet connectivity for reliable network integration, the M66S++ is built to deliver consistent uptime and scalable performance.

Key Advantages

⚡ 348 TH/s SHA-256 hash rate for strong Bitcoin production
🔋 Outstanding 15.5 J/Th efficiency for optimized energy costs
💧 Immersion cooling system for superior thermal stability
🏭 Industrial-grade AC 380–480V power support
🌡️ Wide operating temperature range for flexible deployment
📡 Stable Ethernet connectivity for uninterrupted mining

Released in December 2024, the WhatsMiner M66S++ (348Th) is designed for miners who prioritize efficiency, scalability, and long-term operational stability in advanced immersion-cooled environments.